How do I bypass an Activation lock on iOS 9.0.2?

Hi!
I have iPad Mini (Wi-Fi). After restore and update to 9.0.2 from iTunes it goes only to the Activation screen. The problem is that I forget the email im using for iCloud.
How can I bring it back to life?
P.S. Sorry, my english its not very good.

Bruh, who are you kidding? Just call the number on the screen and ask the owner if you can buy the phone or pad from them. Offer like $40-$60 and see if they agree. I am sure you got scammed in the first place when you bought it for cheap. I always say you get what you pay for. Follow the rules and don't be a punk. Do the right thing and dont be a wimp.... And for everyone out there reading this NEVER INVOLVE COPS. I've seen victims call police and end up going to jail.. Don't snitch and dont steal. Thank you